Relevance: Severe uncontrollable coagulopathy in major trauma patients continues to be a major determinant of trauma mortalities. The proposed effort aims to provide an early, coagulopathy-based prediction model to identify patients at risk for massive transfusion. Moreover, our proposal intends to evaluate early stored whole blood transfusion in this at risk patient population and determine stored whole blood's ability to prevent or control severe coagulopathy compared to standard transfusion care.